321.31% is the change from 61 to 257
Calculation steps:
[( 257 - 61 ) ÷ 61] x 100 = 321.31%
Formula
Percentage change = [(257 - 61) / 61] x 100
Subtract the new number by the original number
257 - 61 = 196
196 ÷ 61 = 3.2131147540983607
3.2131147540983607 x 100 = 321.31%